<template>
  <div class="home-category">
    <ul class="menu">
      <li
        v-for="(item, index) in asideList"
        :key="index"
        @mouseenter="categoryId = item.id"
      >
        <RouterLink :to="`/category/${item.id}`">{{ item.name }}</RouterLink>
        <template v-if="item.children">
          <RouterLink
          v-for="(sub, index) in item.children"
          :key="index"
          :to="`/category/sub/${sub.id}`"
          >{{ sub.name }}</RouterLink>
        </template>
        <template v-else>
           <XtxSkeleton width="60px" height="18px" style="margin-right:5px"
            bg="rgba(255,255,255,0.2)" />
           <XtxSkeleton width="50px" height="18px" bg="rgba(255,255,255,0.2)"/>
        </template>
      </li>
    </ul>
    <!-- 弹层 -->
    <div class="layer">
      <h4 v-if="currentCategory">{{categoryId==='brand'?'品牌':'分类'}}推荐 <small>根据您的购买或浏览记录推荐</small></h4>
      <ul v-if="currentCategory && currentCategory.goods && currentCategory.goods.length">
        <li v-for="(item, index) in currentCategory.goods" :key="index">
          <RouterLink :to="`/product/${item.id}`">
            <img :src="item.picture" alt="" />
            <div class="info">
              <p class="name ellipsis-2">{{ item.name }}</p>
              <p class="desc ellipsis">{{ item.desc }}</p>
              <p class="price"><i>¥</i>{{ item.price }}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
      <!-- 品牌推荐 -->
      <ul v-if="currentCategory && currentCategory.brands && currentCategory.brands.length">
        <li class="brand" v-for="(item,index) in currentCategory.brands" :key="index">
          <RouterLink to="/">
            <img
              :src="item.picture"
              alt=""
            />
            <div class="info">
              <p class="place"><i class="iconfont icon-dingwei"></i>{{item.place}}</p>
              <p class="name ellipsis">{{item.name}}</p>
              <p class="desc ellipsis-2">{{item.desc}}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import { useStore } from "vuex";
import { reactive, computed, ref } from "vue";
import { findBrand } from "@/api/home.js";
export default {
  name: "HomeCategory",
  setup() {
    const store = useStore();
    // 自己定义一个品牌分类
    const brand = reactive({
      id: "brand",
      name: "品牌",
      children: [{ id: "brand-children", name: "品牌推荐" }],
      brands: [],
    });
    // 获取首页侧边导航分类
    const asideList = computed(() => {
      const list = store.state.category.list.map((item) => {
        return {
          id: item.id,
          name: item.name,
          children: item.children && item.children.slice(0, 2),
          goods: item.goods,
        };
      });
      list.push(brand);
      return list;
    });
    // 获取当前分类逻辑
    const categoryId = ref(null);
    // 要用的为currentCategory的goods属性
    const currentCategory = computed(() => {
      return asideList.value.find((item) => item.id === categoryId.value);
    });
    // 获取品牌推荐
    findBrand()
      .then((res) => {
        // console.log(res);
        // 将获取的数据储存在brand对象里的brabds空数组中
        brand.brands = res.result;
      })
      .catch((error) => {
        console.log(error);
      });
    return {
      asideList,
      categoryId,
      currentCategory,
    };
  },
};
</script>

<style scoped lang='less'>
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;
      &:nth-child(1):hover {
        background-color: #55efc4;
      }
      &:nth-child(2):hover {
        background-color: #00b894;
      }
      &:nth-child(3):hover {
        background-color: #ddcb8f;
      }
      &:nth-child(4):hover {
        background-color: #ecc16f;
      }
      &:nth-child(5):hover {
        background-color: #fab1a0;
      }
      &:nth-child(6):hover {
        background-color: #ff7675;
      }
      &:nth-child(7):hover {
        background-color: #81ecec;
      }
      &:nth-child(8):hover {
        background-color: #00cec9;
      }
      &:nth-child(9):hover {
        background-color: #e17055;
      }
      &:nth-child(10):hover {
        background-color: #74b9ff;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }
  // 弹出层样式
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #ff7675;
          }
          img {
            width: 95px;
            height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
            li.brand {
        height: 180px;
        a {
          align-items: flex-start;
          img {
            width: 120px;
            height: 160px;
          }
          .info {
            p {
              margin-top: 8px;
            }
            .place {
              color: #999;
            }
          }
        }
      }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
}
@keyframes fade{
  0% {
    opacity: 0.2;
  }
  100% {
    opacity: 1;
  }
}
.xtx-skeleton {
  animation: fade 1s linear infinite alternate;
}
</style>